Zip disk tower



FIG. 1 is a perspective view of the zip disk tower showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof, the left side elevation view being a mirror image of the right side elevation view; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for a zip disk tower, as shown and described. 